THQ's UK head of marketing for Homefront has told GI the company is "very confident" that upcoming Kaos shooter Homefront will be "genre competitive".
But speaking to the site, Jon Rooke said it wasn't expecting it to take on the type of sales Modern Warfare 2 experienced and become a "world beater".
"We have to be careful - we're very confident about the brand, but we're not going out and saying that it's going to be bigger than Modern Warfare," he said.
"We're not going to do what maybe some of competitors do, and set themselves up to fail on that stage.
"We believe it's an absolutely fantastic product - it's going to be genre-competitive and actually stand out in a number of areas. But we're also very conscious that this is a new IP, and first time in a franchise.
"So I wouldn't necessarily use myself the words 'It's a world-beater' - because I think that conjures up the idea that we'll be the best-selling first-person shooter game next year. We won't - because there'll be another Call of Duty, which will do that."
Homefront releases next year for PS3, 360 and PC.